By-pass stop-cock for multiple-light gaseliers.



N0. 704,673. l Patented .luly l5, |902.

W. H. W. FAHNDRlCH. BY-PASS STOP BUCK FOR MULTIPLE LIGHT GASELIEBS.

(No. Model.)

UrTEDv STATES PATENT OFFICE.

WILHELM HERMANN VVALTHER FHNDRICH, OF HAMBURG, GERMANY.

BY-PASS STOP-COCK FOR MULTIPLE-LIGHT GASELIERS.

SPECIFICATION forming part of Letters Patent No. 704,678, dated July 15, 1902. Application filed NovemherZ, 1901. Serial No. 83.558. (No model.)

To all whom, it may concern:

Be it known that I, WILHELM HERMANN VALTHER FHNDRICH, manufacturer, residing at 29 Neustadterstrasse, Hamburg, in the German Empire, have invented a -By -Pass Stop-Cock for Multiple-Light Gaseliers and the Like, of which the following is a specification. v

The invention comprises thefeatures and combination of parts whereby the main jets of a gaselier may be lighted and extinguished successively by the manipulation of a single controlling-plug.

Reference is to be had tothe accompanying drawings, forming part of this specification, wherein- Figure l is an axial section of the apparatus. Fig. 2 is a section of a two-way or duplex burner-supporting branch forming part of or attached to the casing ofthe apparatus, whileFigs. 3, 4, and 5 are horizon tal sections of the casing and plug ofthe apparatus, showing the plug in various angular positions. l

In Fig. l, ct is the gas-supplyV pipe, h the body or casing of the apparatus, and c the plug. To the casing b a series of two-way or duplex burner-supporting branches k are attached. Each of these branch es 7c is divided, as shown, one arm containing the passage f, which leads to the main llame, while the other arm contains the second passage e, leading to the pilot-jet.

In an upward extension of the plugY c is formed a central passage t, whence a series of passages s branch 0E radially within the main body of the plug. A passage p, moreover, leads from passage t into a chamber g, provided in the casing b above the main body of the plug. With this chamber g are connected tubes m, each of which communicates with the second 'passage e in one of the branches 7c. `The plug is turned by means of the external handle or knob d. Gas is continuously supplied through the pipe ct, and

` inasmuch as its passage through the channel p is never obstructed, no matter what the angular position of the plug may be, gas is continuously delivered also into the chamber g and is thence conducted through the tubes fm into the second passage c, leading to the pilot-jets, which are thus kept permanently burning.

For the purpose of supplying the mainjets with gas the plug is turned so as to uncover one or more of the passages 3,-thus allowing gas to flow through the said channel or channels into the corresponding main pass or passes f of the duplex branches. There are,

as before stated, a number of such passages S-viz., as many as there are main jets. In the periphery of the plug are peripheral grooves or ports r, extending from the oriices of the passages s, the disposition of said passages and the length of the ports r being such that as the plug is turned communication with the several main passes f is opened or cut off, not simultaneously but successively, with one main pass ata time. This isillustrated in Figs. 3, 4,and 5,wherein are shown three diierent positions of the plug c and channels s. In the position shown in Fig. 3 communication with all the main passes f is closed, so that none of the main jets can be lighted. Fig. 4 shows the position whereby the opposite extreme is eiected, communication with all the main passes being open, consequently al1 main jets burning at the same time, while Fig. 5 depicts an intermediate position,where in the jets marked I, II, and III alone are lighted.

For special reasons it is deemed desirable that the jets should be ignited in the order of succession indicated by the Roman figures I to V, Figs. 3,4, and 5, and that the lreverse order should be followed in extinguishing them.

In order to facilitate the itting of this apparatus, the tube connection m is screwthreaded at the outer end and provided with a fiange n at the other end, as shown, so that when the tube 'm is screwed home into the branch 7c its flange n shall press tightly upon the washer 0, interposed between the ange and the inner wall of. the casing b, thus ina suring a perfectly gas-tightjoint at that end, while the screw-thread insures tightness at the opposite end.

By meansof the arrangement herein described and shown the manipulation of a single plug suces in the case of an incandescent or other gas-light litting having permanently-ignited pilot-jets to cause the several main jets to be lighted or extinguished one at a time in succession.

The particular arrangement here represented is adapted for use in connection with pendent gas-light burners. For other forms of burners or brackets the construction may be suitably modified without departing from the principle ofthe invention.

I claim- A casing arranged for attachment to a gassupply pipe, and burner-supporting branches attached to said casing, each of said branches havingapassage leading to the main jet and a second passage leading to a pilot-jet, a plug within the casing arranged to leave a chamber therein, said plug having a central pas- WILHELM HERMANN WAL'IIIER FHNDRICII.

Witnesses:

ALFRED JOSEPH, AUGUST HEINRICH FRIEDRICH ToeGE. 

